Then I'm confused what I'm doing wrong. Nothing is connected to an Ethernet cable.

Sorry my bad. I had "map tuner" in my head (it has an ETH connector).

The only connector for logger is the OBD connector (and o2 sensor if you have one).

And like I mentioned, once in a while I need to physically disconnect the OBD connector and plug back in to power cycle the logger. Once I do that (sometimes twice), it connects no problem. However, once the app says its "disconnected from board"....you must fully shut down app (before power cycling).